DOCUMENT:Q189149 10-AUG-2001 [winnt] TITLE :Disk Counters on Clustered Disk Record Zero Values PRODUCT :Microsoft Windows NT PROD/VER:WinNT:4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server, Enterprise Edition version 4.0 - Microsoft Cluster Server ------------------------------------------------------------------------------- SYMPTOMS ======== When you use Performance Monitor to record activity on a shared clustered drive in a Microsoft Cluster Server, the Physical and Logical Disk counters may record zero or incorrect values. Even after enabling Diskperf -Y and restarting the servers in the cluster, the first server to boot may properly record the disk counters but if the shared drive is failed over to a second server, the disk counters record zero and show no activity on the shared drive on the second server. RESOLUTION ========== To work around this problem, you can initiate a failover to the shared disk and then fail back again using the following steps: 1. Launch Cluster Administrator. 2. Right-click the group where the shared disk resides, and then click Move Group. 3. After the disk is online, repeat step 2 and move the group back again. This resets Performance Monitor and allows you to monitor disk activity. To resolve this problem, obtain the latest service pack for Windows NT 4.0. For additional information, please see the following article in the Microsoft Knowledge Base: Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack STATUS ====== This problem was first corrected in Windows NT 4.0 Service Pack 4. Additional query words: mscs chart log perfmon ====================================================================== Keywords : Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400search kbAudDeveloper kbClustServSearch Version : WinNT:4.0 Issue type : kbbug Solution Type : kbnofix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.